Skew vs. interleave

There's a small discussion on S100computers about the terms 'skew' and 'interleave'. In CP/M documentation 'skew' refers to what's usually called interleave these days, i.e. offsetting sectors on a track to compensate for the fact that by the time the computer has processed a given sector the next one has already passed by, so that the computer has to wait an entire revolution for it to pass by the head again; in other documentation as in Chuck's 22disk for example this is also called 'interleave'. However, in later documentation the meaning of 'skew' seems to have changed to refer to the offset of sectors between adjacent tracks to compensate for the time required to step the head. Can anyone (Fred, Chuck?) shed some light on this apparent double meaning of 'skew'? And if skew was used to describe sector interleave then what was the offsetting of sectors between tracks called? Inquiring minds need to know ;-) m